Coking retort oven



April 28, 1931.

4 Sheets-Sheet 1 April 28, 1931. E. LEYH 1,802,518

COKING RETORT OVEN Filed Nov. ,3. 1928 4 Sheets-Sheet 2 Inventor.- W W 45 I t 4" Atty.

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Inventor: WW 51 Atty.

Patented Apr. 28, 1931 UNITED STATES PATENT OFFICE I ms'r LEYH, or Essmr, GERMANY, ASSIGNOR, BY MESIN'E assremannrs, TO 'rrmxor- PERS COMPANY OF PITTSBURGH, PENNSYLVANIA, A

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COKING RETORT OVEN Application filed November 3, 1928, Serial No.

My invention refers to the production of gas and cake from coal and more especially to a coking retort oven of the cross regenerative type, in which the cokin chambers containing the coal to be gasified alternate with heating Walls traversed by vertical heatin flues, while below the coking chambers an heating walls are arranged regenerators extending in the longitudinal direction of the 19 coking chambers and heating walls and transversely to the longitudinal axis of the battery as a "whole. An oven of this type which can be heated either with its own rich gas or with extraneously-derived special gas such as producer gas and the like was first described in U. S. patent to Koppers 818,033 dated April 17, 1906.

Ovens of-this cross-regenerative type involve the disadvantage, more especially when they shall be heated with preheated air and preheated poor gas, that the brick work partitions separating the regenerators and which 'are 'inserted between pairs of regenerators traversed in opposite directions, measure 2 about-300450 square feet and, on the operationof thepven being started and the whole bl oc'k of chambers undergoing consider able expansion, have a great tendency to'crack. 'This'form'ation of cracks or fissures inthe T 90 brickwork inevitably results in lossesof gas and airpassin through the brick work from fthei'upfiovv' tot e downflow regenerators.

' ,In order to obviate j these drawbacks,

Friedrich Totzek in a copending application 85 for patent of the'United States'entitled"Retort oven ior producih gasgand coke has suggested arranging t 'ei regenerators for communication with the heating walls in a "peculiar manner. Pairs of regeneratqrcham- 3 bers extend in'line underneath the heating jwlallsgand cokingchambersfrom the pusher f side to the'boke side. Each of the two charm bers bf each" pair communicate; directly with {i "correspondinghalvesbfthe heating walls g jfabbve ithy'means of hortdiicts extending in Hues in thebther halves these" heating yv allsfibeing'aijranged abovelthe" other reenerator chamber, communicate with the rs t chamber throughacanal'xtendmgifrom Fig. p L a;

317,072, and in Germany November 28, 1927.

the inner top corner of this chamber and between the other chamber and the heating flues above same, separate ducts leading from the canal to theseflues. In this manner bot-h chambers of each pair of regenerator chambers in the cross regenerative coke oven, although extending onl halfway across the oven, are connected wit all the flues. of the heating walls above the re enerator, whereby the fiow of gases in each heating wall is rendered uniform all over its length and each gas particle, no matter which way it may travel within the battery, always encounters the same total resistance, the distance through which it passes, being always equally long.

While in Friedrich Totzeks application for patent mentioned above his invention was shown and described in application to an oven of the hair-pin flue type, in which the flues in each heating wall are combined in pairs operating flow fines. I I y i 'I have foundlth'at by applying the new principle of construction and gas and air distribution to that typeeofcoke ovenswhich is described-' forflinstalice in Beckers-U, S.

Patent 1,374,546, shlr iovens will also be greatlyimproved. FIn this typeofzov'ens adjoining heating walls are combined in airs for cooperation, a passage extendin-a rom one heating wall of-a pair :and above the coking chamber arranged between them toqthe heating wall on-the otherside of the coking chamber and the burning gas mixture asing my invention is illustrated diagrammath Cally way 9 ease la h p i i e w Fi '1 's a c'r'osssection of the batteryiof coke ovens, being ga longitudinalsection of a conroaa'rron or DELA- alternately as upfiow and down- 7 heati -Ma l and mg er zleni-th -1.19m

Bi-BinEig.'2. I i. f

Fig. 2is a partial-longitudinal section of the battery of-Iovens on the lineA-Ain Fig. 3 is a horizontal section on the line DD and Fig. 4 is a similar section on the line E-E in Fi 1.

Referring to the drawings, 9 are the coking chambers and 10 and 11 are pairs of rows of combustion flues forming heating walls enclosing the coking chambers between them. Above the flueslin each. heating wall extends a horizontal bus flue 4. The bus fines oftwo adjoining heating walls are connected by a number of U'shaped cross-over passages 12.

Underneath the coking chambers and in parallel therewith extend the pairs of regenerator chambers filled with checkerwork, the chambers of each being'separiated by a partition 13, the combined partitions tor-min g a wall extending thremglmutthe length and in the middle axis of the ibattery'oif .cokeovens (Fig. 4'). The chambers of adjoining regenerators on the coke side are marked 14 and 15, those on the pusher side 14a and 15a, respectively. Each chamber communicates with all the heatingfines of a heating wall, communication with those flues which are arranged directly above it, being established by short ducts eiitending from the regencrator directl to thebottom of the fines, while a canal ex ending from the inner top corner of the chamber first in'slightly ascending direction and thereafter horizontally above the other chamber and below the heating fiues arranged above this latter communicates with these fines by means of short ducts of its own. Inthe case illustrated inthedrawings the right hand regenerator chamber ld shown in 1 directly sometimes with the heating fines 11 direcflyrdlaoue b-v ducts 17, while 'cominum'ica'tiwi isdi .the heating fines in the lftihaadkhrlf? otdhhrsagme heating wall is establisheddzy the. earn lids, and

ducts 17a. In a sirnllar manner the lefthand chamber Meet the regenerator is in direct communication with the left hand half of the adjoining heating wall 10 by means of fines 16a, while commnnication with theright hand half of the fines in this heating wall is established by the canal 18 and ducts 16. Similarcanals 19, 1.9a are provided for communication between the regenerator chambers 15 and 15a and the heating walls 11 and 10, respectively.

Assuming the regenerator chambers on the rigaht hand side to be in course of preheating an the oven to be heated with extrarleouslyderived gas, gas will for instance enter the regenerator chambersl tthrou sole channels 24 L 1), air entering {he regenerator cl" mbers 15 through similar sole channels '(not 'shown). gas hlfid air in passing through the chambers are preheated incontact with the hot chebkerwerkand enter the right hand half of the heating fines directly through ducts 17 and 16, respectively, while the heating fiues in the left hand half of the same heating walls are supplied with preheated air and gas through the canals 18a and 19a and ducts 17a and 16a, respectively. After combustion the hot waste gases will pass from the heating wall through the buss flue 4,

above the heating wall, through'the passages 12 into the bus flue above the other heating wall of the pair and down through the fiues in this wall, escaping through ducts tea and 17a, canals 18 and T9 and-regenerators 14a and 15a, respectively.

Obviously after reversal, the direction of flow of the air and gases is reversed also.

At 30 in Fig. 2 is shown the rich gas pipe from which rich gas is conducted in a well known manner into the heating flues from below. Obviously it is also possible to supply rick gas from chambers provided below the oven. structure by means of pipes extending through the supporting walls, and it is further possible to supply gas in steps or at the lower end of the upfiow or the upper end of the down-flow rows of heating fiucs.

I wish it to be understood that I do not desire to be limited to the exact details of construction shown and described for obvious modifications will occur to a person skilled in the art.

I claim 1. Coking retort oven comprising a horizontally elongated coking chamber, a pair of heating Walls alongside and one on each side of and parallel to said coking chamber, verticalcombustion flues in each of said heating walls, and a horizontal bus flue in each of saidheating walls communicating with the vertical fiues in the same wall, a passage extending above said coking chamber and cominunicably connecting the bus fines on o posite sides of said coking chamber,a pair 0 regenerator chambers extending in line below and parallel with said coking chamber and heating walls, each of the re enerator chamhers ex tendin from one on to the middle.

of the oven, nets establishing direct com munication between one of said regenerator chambers and the vertical fines of one half of one of the heating walls, a canal extendin between the other regenerator chamber and the other half of the same heating Welland communicating with said one of said regenerator chambers at theinner partthereof and communicating by duets with the vertical fines of said other half of the same heating wall,

ducts establishing acommunication between said other regenerator chamber and the vertical fines of one half of the other heating wall, a canal extending between saidfone of said regenerator chambers and the other half;-

of said other heating .wall and ,communicating with said other re eneratorchamber at the inner part-there) and comm inicating by ducts with the Nertical fluesofisai'd other 'halfof said other heating wall. i

2. Coking retort oven comprising ahorizontally elongated coking chamber, a pair of heating walls alongside and one on each side of and arallel to said cokin chamber, vertical com ustion fines in each 0 said heating walls, and a horizontal bus flue in each of said heating walls communicating with the vertical flues in the same wall, a passage extending above said coking chamber and communicably connecting the bus flues on opposite sides of said coking chamber, a pair of regenerator chambers extending in line below and parallel with said coking chamber and heating walls, one of said regenerator chambers and the vertical fines of one half of one 5 of the heating walls, a canal extending between the other regenerator chamber and the other half of the same heating wall and communicating with said one of said regenerator chambers at the inner part thereof and communicating by ducts with the vertical flues of said other half of the same heating wall, ducts establishing communication between said other regenerator chamber and the vertical fines of one half of the other heating wall, a canal extending between said one of said regenerator chambers and the other half of said other heating wall and communicating with said other regenerator chamber at the inner part thereof and communicating by ducts with the vertical fines of said other half of said other heating wall, the inner ends of the said canals being inclined to the horizontal, the remaining portions of the canals being parallel to said heating walls and the inner ends of the canals crossing each other in spaced relation.

In testimony whereof I afiix my si ature.

ERNST L YH.

zontally elongated coking chamber, a pair of heating walls alongside and one on each side of and parallel to said cokin chamber, vertical combustion flues in each 0 said heating Walls, and a horizontal bus flue in each of said heating walls communicating with the vertical flues in the same wall, a passage extending above said coking chamber and communicably connecting the bus flues on opposite sides of said coking chamber, a pair of regenerator chambers extending in line below and parallel with said coking chamber and heating walls, one of said regenerator chambers and the vertical fiues of one half of one of the heating walls, a canal extending between the other regenerator chamber and the other half of the same heating wall and coinmunicating with said one of said regenerator chambers at the inner part thereof and communicating by ducts with the vertical fines of said other half of the same heating wall, ducts establishing communication between said other regenerator chamber and the vertical flues of one half of the other heating wall, a canal extending between said one of said regenerator chambers and the other half of said other heating wall and communicating with said other re enerator chamber at the inner part thereof and communicating by duets with the vertical fiues of said other half of said other heating wall, the inner ends of the said canals being inclined to the horizontal, the remaining portions of the canals be ing parallel to said heating walls and the inner ends of the canals crossing each other in spaced relation.

In testimony whereof I aflix my si ature.

ERNST L YH.

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CERTIFICATE OF CORRECTION.

Patent No. 1,802,518.

April 28, 1931.

ERNST LEYH.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 3, line 13, claim 2, after "heating walls," insert the words each of the regenerator chambers extending from one end to the middle of the oven, duets establishing direct communication between; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 15th day of May, A. D. 1934.

(Seal) Bryan M. Battey Acting Commissioner of Patents.

CERTIFICATE OF CORRECTION.

Patent No. 1.802.518. April 28, l93l.

ERNST LEYH.

it is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 3, line l3, claim 2, after "heating walls," insert the words each of the regenerator chambers extending from one end to the middle of the oven, ducts establishing direct communication between; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this [5th day of May, A. D. 1934.

Bryan M. Battey (Seal) Acting Commissioner of Patents. 

